Yellow and gray screen

[username]

I havent played for couple of months and decided to do so today.
Downloaded latest PR update and everthing worked well. My favorite server was full so I was in the lobby waiting for an empty place.
Suddenly everthing turns up like NES 8-bit. All texts where undreadable.
I restarted the game and now I see nothing, first a black page, then a yellow and when I reach the log in menu (I hear by the sound) its all grey. The pointer of the mice are still there like normal.
What happened? Did my video card burn up? I can still play other games though.

I have Vista 64bit, dual core 2.67GHz, 3GB ram
GF 8600GT 512mb

[SocketMan]

Try a different driver version for the Video card.

[username]

Problem is solved. Or... I didnt solve anything, but today everything worked fine. Thanks btw for the advice.